Unlike a clip taken from a famous song or film, this is a generic guitar sound effect of the kind found in stock libraries and soundboard collections. Creators have long used simple guitar strums as shorthand for music, relaxation and a laid-back mood, because the instrument is instantly recognisable even without lyrics or a melody. Online, short versions like this one are popular for intros, transitions and memes, where a single chord can set the tone in seconds. That simplicity is why it keeps appearing in videos, streams and edits across platforms.